Third party certification of content in electronic commerce transactions

ABSTRACT

A system for providing third-party certification of content in an electronic commerce transaction includes one or more servers operating on one or more computers. The one or more servers receive a first set of attribute values from a first party, the first set of attribute values being associated with one or more products that are the subject of an electronic commerce transaction between the first party and a second party. The one or more servers verify that the first set of attribute values matches, at least in part, a second set of attribute values maintained by the second party, the second set of attribute values being associated with the one or more products that are the subject of the electronic commerce transaction between the first party and the second party. The one or more servers store the first set of attribute values in one or more databases, generate a key identifying the stored set of attribute values, the key providing a holder of the key read-only access to at least certain portions of the stored set of attribute values, and communicate a copy of the key to the first and second parties. In response to presentation of the key, the one or more servers provide read-only access to at least certain portions of the stored set of attribute values.

RELATED APPLICATION

This application claims the benefit under 35 U.S.C. § 120 of U.S. application Ser. No. 09/895,490, filed Jun. 29, 2001, entitled “Third Party Certification of Content in Electronic Commerce Transactions.”

TECHNICAL FIELD OF THE INVENTION

This invention relates to electronic commerce and more particularly to third party certification of content in electronic commerce transactions.

BACKGROUND OF THE INVENTION

Due to the ever-increasing popularity and accessibility of the Internet as a medium of communication, the number of business transactions conducted using the Internet is also increasing, as are the numbers of buyers and sellers participating in electronic marketplaces providing a forum for these transactions. The majority of electronic commerce (“e-commerce”) transactions occur when a buyer determines a need for a product, identifies a seller that provides that product, and accesses the seller's web site to arrange a purchase of the product. If the buyer does not have a preferred seller or if the buyer is purchasing the product for the first time, the buyer will often perform a search for a number of sellers that offer the product and then access numerous seller web sites to determine which seller offers certain desired product features at the best price and under the best terms for the buyer. The matching phase of e-commerce transactions (matching the buyer with a particular seller) is often inefficient because of the large amount of searching involved in finding a product and because once a particular product is found, the various offerings of that product by different sellers may not be easily compared. After identifying a suitable seller, a buyer may contact the seller and negotiate a contract for the sale of certain products. Product data specifying the products that are the subject of the contract may be included in the contract. Such data, when recorded in an electronic or other copy of the contract kept by the buyer, the seller, or both may be susceptible to being changed without there being any way to easily detect the changes. As a result, it may be difficult to ascertain with certainty the original terms of the contract.

SUMMARY OF THE INVENTION

According to the present invention, disadvantages and problems associated with previous e-commerce techniques have been substantially reduced or eliminated.

In one embodiment of the present invention, a system for providing third-party certification of content in an electronic commerce transaction includes one or more servers operating on one or more computers. The one or more servers receive a first set of attribute values from a first party, the first set of attribute values being associated with one or more products that are the subject of an electronic commerce transaction between the first party and a second party. The one or more servers verify that the first set of attribute values matches, at least in part, a second set of attribute values maintained by the second party, the second set of attribute values being associated with the one or more products that are the subject of the electronic commerce transaction between the first party and the second party. The one or more servers store the first set of attribute values in one or more databases, generate a key identifying the stored set of attribute values, the key providing a holder of the key read-only access to at least certain portions of the stored set of attribute values, and communicate a copy of the key to the first and second parties. In response to presentation of the key, the one or more servers provide read-only access to at least certain portions of the stored set of attribute values.

Particular embodiments of the present invention may provide one or more technical advantages. For example, certain embodiments of the present invention may allow a buyer and seller (and others) to verify at least some of the terms of a contract arising from an e-commerce transaction between the buyer and seller. The ability to verify such contract terms may give buyers and sellers greater confidence in the integrity of content providing the basis for such contracts. It is possible that such content may be altered after an agreement has been reached between the buyer and seller without there being any easy way to detect the alteration. This may be especially true where the content providing the basis of the contract has come from a database that includes text and number fields for products available from one or more sellers. Accordingly, embodiments of the present invention may reduce market friction and encourage otherwise hesitant buyers and sellers to conduct business over electronic communication systems, such as the Internet. Certain embodiments of the present invention may allow a buyer and seller to verify product attribute values and seller attribute values for one or more products that are the subject of an e-commerce transaction between the buyer and seller. Particular embodiments may also or alternatively allow third parties having an interest in the transaction (such as common carriers, financial institutions, legal service providers, or other transaction services providers) to verify the same for suitable purposes.

Systems and methods incorporating one or more of these or other technical advantages may be well suited for modern e-commerce environments. Other technical advantages may be readily apparent to those skilled in the art from the following figures, descriptions, and claims.

BRIEF DESCRIPTION OF THE DRAWINGS

To provide a more complete understanding of the present invention and the features and advantages thereof, reference is made to the following description taken in conjunction with the accompanying drawings, in which:

FIG. 1 illustrates an example e-commerce system;

FIG. 2 illustrates an example directory structure of an example global content directory;

FIG. 3 illustrates an example table of a seller database;

FIG. 4 illustrates an example e-commerce system in further detail;

FIG. 5 illustrates an example method for providing third party certification of content in an e-commerce transaction; and

FIG. 6 illustrates another example method for providing third party certification of content in an e-commerce transaction.

DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS

FIG. 1 illustrates an example system 10 that includes a network 12 coupling buyers 20, sellers 30, and a global content directory (GCD) server 40. System 10 enables e-commerce transactions between buyers 20 and sellers 30 through the use of a GCD 42 supported by GCD server 40. Although GCD 42 is shown as being external to GCD server 40, GCD 42 may be internal or external to GCD server 40. Network 12 may include any appropriate combination of public and/or private networks coupling buyers 20, sellers 30, and GCD server 40. In an example embodiment, network 12 includes the Internet and any appropriate local area networks (LANs), metropolitan area networks (MANs), or wide area networks (WANs) coupling buyers 20, sellers 30, and GCD server 40 to the Internet. Since the Internet is accessible to the vast majority of buyers and sellers in the world, the present invention potentially includes all of these buyers and sellers as buyers 20 and sellers 30 associated with system 10. However, the use of the term “global” should not be interpreted as a geographic limitation necessarily requiring that GCD 42 provide directory services to buyers 20 and sellers 30 around the world (or in any other particular region) or that the content of GCD 42 be from all over the world (or from any other particular region).

Although buyers 20 and sellers 30 are described as separate entities, a buyer 20 in one transaction may be a seller 30 in another transaction, and vice versa. Moreover, reference to “buyer” or “seller” is meant to include a person, a computer system, an organization, or other entity where appropriate. For example, a buyer 20 may include a computer programmed to autonomously identify a need for a product, search for that product, and buy that product upon identifying a suitable seller. Although buying and selling are primarily described herein, the present invention contemplates any appropriate e-commerce transaction. Moreover, reference to “products” is meant to include goods, real property, services, information, or any other suitable tangible or intangible things.

A typical e-commerce transaction may involve a “matching” phase and a “transactional” phase. During the matching phase, a buyer 20 may search for a suitable product (meaning any good, real property, service, information, or other tangible or intangible thing that may be the subject of an e-commerce transaction) offered by one or more sellers 30, identify the most suitable seller 30 (which may involve, for example, identifying the seller 30 offering the lowest price), and contact that seller 30 to enter the transactional phase. During the transactional phase, the buyer 20 and seller 30 may negotiate a contract for the sale of the product (which may involve, for example, more clearly defining the subject of the transaction, negotiating a price, and reaching an agreement on supply logistics) and generate a legal document embodying the terms of the negotiated contract. To identify the most suitable seller 30 during the matching phase without the use of GCD 42, a buyer 20 may have to access numerous seller web sites to determine which seller 30 offers certain desired features of the product at the best price. Sellers 30 may each provide one or more databases 32, such as relational databases, that include data identifying the products available from sellers 30 and their features. Each database 32 may be accessed through the associated seller's web site or in any other appropriate manner. The multiple one-to-one (one buyer 20 to one seller 30) searches that this process requires are inefficient and expensive because of the large amount of searching involved in finding a product and because the various offerings of that product by different sellers 30 may not be easily compared.

Alternatively, multiple sellers 30 may be grouped in an electronic marketplace according to the products they provide and a buyer 20 may search the offerings of the multiple sellers 30 at a single web site. However, if buyer 20 wishes to obtain several different types of products, buyer 20 may have to go to several different types of marketplaces. Furthermore, there may be numerous competing marketplaces that buyer 20 has to search to perform the matching phase of a transaction for a particular product. One potential method of addressing this problem is to create a global product database that potentially includes data identifying the features of all the products that any buyer may wish to obtain. Therefore, the global database would include the combined contents of every database 32 associated with every seller 30. However, such a global database would have many problems. For example, the sheer size of the database would make it difficult to search and cause the database to suffer from performance problems. In addition, it would be difficult to allow large numbers of buyers 20 to search the database at once. Furthermore, all sellers 30 would be required to access the global database to update their information and the entire database would have to be updated each time a change is made. Many other problems might also exist.

A solution to the above problems, at least in part, is GCD 42. GCD 42 is a universal directory of the contents of multiple seller databases 32 (and potentially all seller databases 32). GCD 42 may be implemented using one or more servers 40 or other computers located at one or more locations. Most or all of the content in these seller databases 32 remains stored in databases 32, but this content is accessible using GCD 42. Therefore, like the global database described above, GCD 42 provides buyers 20 with access to product data relating to a multitude of products (and potentially seller data relating to one or more sellers 30 of the products), but unlike the global database, GCD 42 does not attempt to store all of this data in one enormous database. Where appropriate, reference to “data” is meant to include product data (meaning information reflecting values for certain attributes of a product), seller data (meaning information reflecting values for certain seller attributes), or both product data and seller data.

GCD 42 provides a directory of products using a directory structure in which products are organized using a hierarchical classification system. A buyer 20 may navigate or search the directory to find a particular product class into which products are categorized. The product data (and potentially seller data) associated with a product included in a product class may actually be stored in and obtained by GCD 42 from a seller database 32. However, the requested data may be transparently provided to buyer 20 such that all of the product data may appear to buyer 20 as being included in GCD 42. Although product and/or seller data has primarily been described as being stored in seller databases 32, the present invention contemplates product data being stored in any suitable manner and being retrieved from any suitable sources. For example, system 10 may include a shared data repository 34 that contains product data and/or seller data that may be combined with data from one or more seller databases 32, as described in further detail below.

System 10 also provides for third party content certification by certification authority 14. At the close of the transaction phase of an e-commerce transaction, buyer 20 may receive from seller 30 or otherwise a list of the product attribute values (and possibly the seller attribute values) for the one or more products that are the subject of the transaction along with other transaction-related information. These attribute values may specify the product which seller 30 has agreed to sell and buyer 20 has agreed to buy and, thus, may provide one or more of the terms of a contract between buyer 20 and seller 30. The attribute values recorded in an electronic or other suitable copy of the contract kept by one or both of the parties may be susceptible to being changed without there being any way to easily detect the changes. As a result, it may be difficult to ascertain with certainty the original terms of the contract. A solution to this problem, at least in part, is the use of a third-party certification authority 14 that may verify for buyer 20, seller 30, or others interested in the transaction between buyer 20 and seller 30 the product and/or seller attribute values for the products that are the subject of the transaction (and possibly other transaction information). The operation of certification authority 14 is described more fully below, with reference to FIG. 4.

FIG. 2 illustrates an example directory structure 44 of an example GCD 42. Products categorized in GCD 42 may be organized according to schemas. A schema may include a set of product classes (which may be referred to as a “taxonomy”) organized in a hierarchy, each class being associated with a set of product features, characteristics, or other product attributes (which may be referred to as a “product ontology”). For example, pens may have different kinds of tips (such as ball point or felt tip), different tip sizes (such as fine, medium, or broad), and different ink colors (such as blue, black, or red). Accordingly, a schema may include a class corresponding to pens that has a product ontology including tip type, tip size, and color, or other appropriate attributes. Within a class, products may be defined by product attribute values (such as, for example, ball point, medium tip, blue ink). Reference to “value” is meant to include any instance of a product attribute or a seller attribute. Product attribute values and seller attribute values may be represented by numbers, letters, figures, characters, symbols, or other suitable information for describing a product or a seller, respectively. In one embodiment, a product ontology may be divided into entry-required attributes (meaning attributes for which a value has to be provided) and entry-optional attributes (meaning attributes for which a value is optional), and these categories may be further divided into commercial features and design features (or any other suitable divisions).

In addition to a taxonomy and product ontologies, a schema may include a set of attributes for each seller (which may be referred to as a “seller ontology”). Such attributes may include geographic restrictions (such as served markets), currencies accepted by each seller, collaboration tools accepted by each seller, contract terms accepted by each seller, types of contracts accepted by each seller, levels of buyer credit required by each seller, and any other suitable seller attributes. Similar to a products within a product class, sellers offering products within a product class may be defined by seller attribute values corresponding to seller attributes. Accordingly, a schema may include a set of classes, each including one or more products, and each class may be associated with a set of product attributes and a set of seller attributes.

In example directory structure 44, products may be organized and cataloged according to industry standard schemas 46 or other appropriate schemas, as described below. Within industry standard schemas 46, there are two example classes: a direct materials class 48 and an indirect materials class 50. Each of these classes 48 and 50 includes several sub-classes (which may themselves include sub-classes). Therefore, the numerous classes of directory structure 44 form a “tree-like” hierarchical structure into which products may be categorized. For example purposes, certain portions of directory structure 44 are “expanded” in FIG. 2 to show various levels of classes. The “level” of a class is indicated by the number of other classes between that class and a root class (such as industry standard schemas class 46). For example, indirect material class 50 is at the same level in directory structure as direct material class 48. Indirect material class 50 may include an office and computer supplies class 52, which includes a desk supplies class 54, which includes a writing utensils class 56. Furthermore, writing utensils class 56 includes a pens class 58, which includes numerous pen type classes 60 a-60 n (“n” indicating that any number of classes 60 may be included in pens class 58). Each of classes 50, 52, 54, 56, 58, and 60 is located at a different level of directory structure 44. A class at any level in directory structure 44 may include one or more sub-classes, those sub-classes may include one or more sub-classes, and so on, until a desired specificity of categorization is reached. A series of classes from a highest level class (the broadest class) to a lowest level class (the most specific class) may be referred to as a “branch” of directory structure 44. For example, classes 46, 48, 50, 52, 54, 56, 58, and 60 b form one branch of directory structure 44.

Although example directory structure 44 may use industry standard schemas 46 as described above, any other appropriate schemas 62 may be used in addition to or instead of industry standard schemas 46. For example, while industry standard schemas 46 may be organized from a seller's viewpoint, other schemas 62 may be used that organize products from a buyer's viewpoint. For example, a buyer 20 may wish to furnish a kitchen of a new house with various products, such as appliances, window treatments, paint, cabinetry, plumbing, dishes, and cooking utensils. Using one schema 62, these products may be organized into a variety of unrelated classes based on certain features of the products (for example, certain kitchen appliances may be categorized in an electronics class 52 of directory structure 44 while paint may be categorized into an industrial class 52). However, another example schema 62 may categorize all such products into a home products class (which may include several classes further categorizing the products, such as a kitchen products class which includes a kitchen appliances class, which includes a refrigerator class, and so on). Therefore, the same product may be included in multiple schemas 62. These alternative schemas may be included in directory structure 44 and may be stored as a part of or separate from GCD 42.

A buyer 20 may navigate through directory structure 44 by expanding or collapsing various classes as desired. For example, FIG. 2 illustrates an expansion of certain classes of directory structure 44 to reach a felt-tip pen class 60 b. Once a buyer 20 has navigated to a class that is specific enough for buyer 20 (and/or a class that is at the end of a branch), buyer 20 may perform a search for products within that class. For example, buyer 20 can search for all products in writing utensils class 56 that are blue felt-tip pins having medium tips. Alternatively, if buyer 20 navigates to the end of a branch of directory structure 44, such as felt-tip pen class 60 b, GCD 42 may then enable buyer 20 to search for such pens that have blue ink and medium tips (which may reach the same result as the search above).

Buyer 20 may also search for sellers matching one or more seller attribute values within a product class. For example, in addition to searching for all products in writing utensils class 56 that are blue felt-tip pins having medium tips, buyer 20 may search for sellers 30 serving Texas that accept U.S. dollars. Buyer 20 may search for products matching certain product attribute values and sellers matching certain seller attribute values in any appropriate manner. In one embodiment, for example, buyer 20 provides search criteria including both values for product attributes and for seller attributes (search criteria may instead be generated automatically, in whole or in part, as described below), and server 40 searches for products that match the product attribute criteria and are offered by sellers matching the seller attribute criteria. In another embodiment, buyer 20 provides only product attribute values as search criteria, and server 40 limits its search for products matching the product attribute values to databases 32 associated with sellers 30 known to match seller attribute values that buyer 20 may want according to a buyer profile or otherwise.

As described above, in one embodiment, product data (at least product data more detailed than data provided by a taxonomy) and seller data are not stored in GCD 42, but are stored in databases 32. For example, a seller 30 may maintain a relational database 32 that includes a plurality of tables containing product attribute values for a variety of products and seller attribute values for each product, a set of products, or all of the products offered by seller 30. Product data and seller data may be integrated into one or more tables or may be segregated into different tables. Moreover, product data and seller data for a seller 30 may be stored in the same or separate databases. One or more pointers may be associated with each class to identify the location of one or more databases 32 that include product data and/or seller data for products contained in that class or to identify particular data in databases 32. Therefore, GCD 42 may execute a search for products in databases 32 identified by a pointer corresponding to a user-selected (or automatically selected) class. GCD 42 may also return the network location (such as a uniform resource locator (URL) or other network address) of the database 32 to buyer 20 so that buyer 20 may independently access database 32. Databases 32 may be searched using any appropriate method including, but not limited to, a structured query language (SQL) query.

GCD 42 may be implemented using the lightweight directory access protocol (LDAP), which enables directories to be provided using the tree-like structure described above. However, any other appropriate technique or protocol for creating GCD 42 may alternatively be used and GCD 42 may have any appropriate structure. Furthermore, GCD 42 may be an object-oriented directory (which is also provided by LDAP) such that each class in directory structure 44 includes the attributes of parent classes in which the class is a sub-class. In this embodiment, a product class listed at the end of a branch of the tree structure includes all of the attributes of its parent classes in the branch. Furthermore, each product included in a database 32 may be an object that includes all the attributes of the classes in which the product is included. Thus, when a search is performed from a class at the end of a branch of directory structure 44, the search query may automatically include any appropriate attributes of parent classes of the class.

For example, if a buyer 20 has navigated through directory structure 44 to felt-tip pens class 60 b, a search performed by buyer 20 (or by GCD 42 on behalf of buyer 20) from felt-tip pens class 60 b may automatically be limited to a search for felt-tip pens and buyer 20 may introduce additional desired search criteria (such as blue ink and medium tip). Therefore, if a database 32 searched includes product data relating to a variety of writing utensils, a search of database 32 may be automatically limited by GCD 42 to only include felt-tip pens within that database 32. Buyer 20 may also identify additional product attribute values and/or seller attribute values as additional search criteria.

When GCD 42 has performed a search of the databases 32 identified by a pointer or pointers associated with a class that buyer 20 has selected (or that has been automatically selected), GCD 42 may return product data and/or seller data associated with one or more products matching the search criteria. GCD 42 may integrate the product data and/or seller data resulting from the search into directory structure 44 so that the data appears to buyer 20 as being part of GCD 42. GCD 42 may alternatively present the results of the search in any other appropriate manner. Each product resulting from the search may be an object which is unique instance of the class in which buyer 20 is searching. Furthermore, each such object (and its location) may be uniquely identified using a numbering scheme corresponding to directory structure 44.

In summary, a buyer 20 may search for a product matching certain product attribute values available from a seller matching certain seller attribute values using GCD 42 and thus eliminate or reduce the need for buyer 20 to individually search numerous seller databases 32 to find the desired product available from a suitable seller. GCD 42 provides access to product and/or seller data relating to these numerous products using directory structure 44, which organizes products using a hierarchical, object-oriented classification system. Buyer 20 may navigate or search directory structure 44 to find a particular classification of products and various information associated with the products within this classification, initiate a search of databases 32 including product and/or seller data relating to a product, and then communicate with an appropriate database 32 through GCD server 40 or otherwise. Such access to vast numbers of products is provided without the requirement that all data about the products and/or sellers be stored in a global database. Instead, this data may be stored in seller databases 32 that can be readily accessed using GCD 42.

One problem that may be associated with the use of the various seller databases 32 is that these databases 32 may include product data about the same class of product (for example, felt-tip pens), but may identify products of that class using different attribute values, may use different names for the same product attribute value, and/or may quantify or distinguish product attribute values differently (using different units of measurement, for example). The same may be true for seller data that may be contained in databases 32. Some of these issues may be solved using translation mechanisms that convert the data into a uniform format used by GCD 42. Alternatively, sellers 30 may create new databases 32 or manually modify existing databases 32 (or may hire a third party to create or modify databases 32) to conform to a uniform standard in anticipation of a database 32 being used in association with GCD 42.

One disadvantage to seller 30 (or a third party) creating data that is appropriate for use with GCD 42 is that the generation of such data is typically expensive and time-consuming. If seller 30 has already created product data (for example, for access by buyers 20 using the seller's web site), seller 30 may be reluctant to repeat the process and expense of recreating, expanding, reformatting, translating, or otherwise modifying existing product data into a format appropriate for use with GCD 42. However, if seller 30 does not properly format its product data and instead uses a pre-existing data format in conjunction with GCD 42, the seller's product data may not be properly associated with GCD 42 and seller 30 may be disadvantaged during the matching phase of a transaction. For example, if the product ontology associated with pens class 58 in directory structure 44 includes ink color as a product attribute and seller 30 does not have this information in its product data or does not refer to this information as “ink color” in its database 32, then a search conducted using GCD 42 for pens having a particular ink color may not properly identify products in database 32 that meet the search criteria. Alternatively, the seller's products may be identified in the search results, but may be ranked lower in the search results since seller 30 does not provide information about the ink color or does provide the information but does not format the information appropriately for use with GCD 42.

One solution to the above problem is to provide a shared product data repository 34 that includes product data relating to numerous common products and which is properly formatted and complete for use with GCD 42. The product data in repository 34 may be made available, for a fee or otherwise, to sellers 30 who do not wish to create (or pay a third party to create) product data for use with GCD 42 or recreate, expand, reformat, translate, or otherwise modify existing product data for use with GCD 42. As an example only, although hundreds of sellers 30 participating in system 10 may sell pens, there may be only a few manufacturers that make the pens sold by sellers 30. Therefore, it may be more efficient and cost effective for the manufacturers to create much of the product data for the pens that they produce and provide this data in repository 34 instead of each seller 30 creating redundant product data for the pens. Alternatively, the product data in repository 34 may be created by an entity associated with GCD 42 or any other appropriate entity.

Product data relating to a particular product that is not seller-specific and/or that changes relatively infrequently (compared to “dynamic” product data, described below) may be created by the manufacturer or another entity and stored in repository 34 for use by sellers 30. This data may be referred to as “static” product data. Examples of static product data relating to a pen may include data relating to ink color, tip type, and tip size of the pen. Other product data relating to a product that is seller-specific and/or that changes relatively frequently (compared to “static” product data) may be created by sellers 30 and stored in seller databases 32. This data may be referred to as “dynamic” product data. Examples of dynamic product data relating to a pen may include data relating to the price, availability, and lead time associated with the pen. Optimally, the combination of the static and dynamic data relating to a particular product will include values for each of the product attributes included in the product ontology of the classes of GCD 42 in which the product is classified. For example, pens class 58 in GCD 42 may have an associated product ontology that includes ink color, tip type, tip size, price, availability, and lead time attributes. Preferably the combination of static product data in repository 34 and dynamic product data in a seller database 32 relating to the pen includes values for each of these product attributes.

When a seller 30 wishes to sell a product using GCD 42, the seller 30 may first determine whether repository 34 includes static product data for the product. Seller 30 may obtain information regarding what product data is included in repository 34 by querying GCD server 40, by querying an entity associated with the repository 34, by directly accessing repository 34, or using any other appropriate technique. If static data for the particular product or products is included in repository 34, then seller 30 may request that the static product data be associated with seller 30 and one or more of its products. As described above, one or more pointers may be associated with each class to identify the location of one or more seller databases 32 that include product data for products contained in that class or to identify particular data in databases 32. In addition, pointers associated with a class may identify the location of a repository 34 and may identify particular data in repository 34. Furthermore, one or more pointers to repository 34 may be linked to one or more pointers to a seller database 32 such that the information from the seller database 32 and repository 34 may be merged. Alternatively, the static product data in repository 34 may be linked with one or more sets of dynamic product data in one or more seller databases 32. Dynamic product data from seller database 32 may be merged with static product data from repository 34 and the combined data may be provided to a buyer 20 as a result of a product search.

Although repository 34 is illustrated as a single storage location, repository 34 may include multiple storage locations at the same or different physical locations. Any appropriate number of storage locations located in a number of physical locations may be used (for example, the storage locations may be distributed in various geographic regions). GCD server 40 may search each of these distributed repositories 34 as appropriate to obtain static product data that is responsive to a buyer's search. Alternatively, pointers associated with a class may direct GCD server 40 to one or more particular storage locations. In addition, if multiple repositories 34 are used, each repository 34 may include identical product data, some common and some different product data, or entirely different product data. Furthermore, repository or repositories 34 may store the product data in any appropriate format using any appropriate storage medium. Moreover, it should be noted that although shared product data repository is described as including static product data, seller databases 32 may also include static product data. This static product data may or not be made available to buyers 20 using GCD 42.

FIG. 3 illustrates an example table 150 that may be included in a seller database 32 and/or repository 34. Database 32 and repository 34 may include one or more tables 150, and each table 150 may contain data relating to one or more products. For example, example table 150 includes data relating to different types of pens. Table 150 may also include data for other types of products (for example, other types of office supplies), or such data may be contained in other tables 150 in database 32 and/or repository 34. Table 150 includes a plurality of columns 152 that each include data relating to a particular product attribute or seller attribute. Although an example number of columns 152 including example product attribute values and seller attribute values are illustrated, it should be understood that any appropriate number and type of product attributes, seller attributes, or other categories of data may be included in table 150. Moreover, as described briefly above, seller data and product data may be segregated into different tables instead of being integrated into the same table as shown in example table 150.

Table 150 also includes a number of rows 154 that may each correspond to a particular product and that each include values for one or more of the product attributes and seller attributes. Each of the values (which may be numeric, textual, or in any other appropriate format) is located at the intersection of the row 154 associated with a particular product and the column 152 that includes a particular product attribute or seller attribute. Each of these intersections may be referred to as a field or cell 156 of table 150. Where seller data and product data are integrated, each row 154 may contain all of the product data and seller data for the product corresponding to that row 154. Alternatively, there may be a row or set of rows dedicated to seller data that may apply to all products offered by a seller 30 or a subset of all such products. Where seller data and product data are segregated, each row in the seller data table may correspond to a set of seller attribute values that may be linked to a set of one or more products in the product data table such that seller data for a product may be accessed when product data for that product is accessed, and vice versa.

The data in one or more columns 152 of table 150 may be indexed to increase the speed with which database reads may be conducted. For example, the fields 156 of ink color column 152 d and tip size column 152 e may be indexed so that a database query for a pen having a particular ink color and tip size may be quickly performed. Data in table 150 may be indexed using any appropriate database indexing technique. The typical result of such indexing is that when GCD 42 or a buyer 20 requests indexed data from a database 32 and/or repository 34, the associated database management system (or other appropriate interface to database 32 and/or repository 34) does not have to search through every field 156 in the tables 150 included in database 32 and/or repository 34 to locate the requested data. Instead, the data may be indexed such that when a query is submitted for products having certain product attribute values and/or sellers 30 having certain seller attribute values that have been indexed, the database management system already knows the locations of such products in table 150 and may return data associated with these products without searching the entire table 150 or database 32 and/or repository 34 for the products. For example, if the ink color fields 156 and tip size fields 156 of columns 152 d and 152 e, respectively, are indexed, the index will typically identify the location of all products having black ink and a medium tip size.

If a query is submitted that also specifies a value of one or more non-indexed product attributes (for example, a query for pens manufactured by ABC Company, if the manufacturer fields 156 in column 152 c are not indexed) and/or seller attributes, then the associated database management system may perform a search of database 32 and/or repository 34 for products that include the specified value of the one or more non-indexed attributes or seller attributes. However, such a search may be limited to the products already identified (using the index) as including specified values of indexed attributes (for example, pens having black ink and a medium tip) and/or seller attributes that are also included in the search. Therefore, the amount of time required to perform the search may be reduced even though one or more of the product attribute values or seller attribute values that are searched for are not indexed.

FIG. 4 illustrates an example e-commerce system 10 in further detail. As described above, numerous buyers 20 and sellers 30 may be coupled to GCD server 40 using network 12. Buyers 20 may access server 40 using a web browser or in any other appropriate manner and server 40 may provide buyers 20 with access to GCD 42 using a web server or in any other appropriate manner. Although GCD 42 is shown as being internal to GCD server 40, GCD 42 may be internal or external to GCD server 40, as described above. GCD server 40 may also include hardware and/or software for implementing one or more GCD interfaces 43. A buyer 20 may access server 40 and use a GCD interface 43 to search or navigate GCD 42 and/or seller databases 32. Information may be communicated among buyers 20, sellers 30, and GCD 42 using hypertext transport protocol (HTTP), extensible markup language (XML), simple object access protocol (SOAP), or any other suitable communication technique. Each buyer 20 and seller 30 may be issued a unique identifier so that the participants in a transaction facilitated by GCD 42 may be identified. Each buyer 20 and seller 30 may also be assigned a role with respect to a transaction. As described above, a buyer 20 in one transaction may be a seller 30 in another transaction, and vice versa.

In an example transaction, a buyer 20 may access a GCD interface 43 and perform a search of GCD 42. GCD interface 43 may allow buyer 20 to both navigate or “browse” the classes of GCD 42 and to search for a particular class or classes. For example, buyer 20 may either navigate GCD 42 to find a class into which pens are categorized or buyer 20 may search GCD 42 for class names including the word “pen.” Any other suitable methods for identifying a particular class may also be used. When buyer 20 has located the appropriate class for the product buyer 20 desires, buyer 20 may then request a listing of products in that class matching certain product attribute values. For example, if buyer 20 is browsing felt-tip pens class 60 b, buyer 20 may request all products in class 60 b (felt-tip pens) that have red ink and a fine tip and that are sold by a seller 30 located in the United States.

A search interface 45, or any other appropriate component of GCD server 40, may facilitate such a request by searching or requesting searches of repository 34 and/or seller databases 32 identified by one or more pointers associated with felt-tip pens class 60 b, as described above. Search interface 45 may provide buyer 20 a search form in which to enter one or more search criteria. The types of search criteria that may be used may be identified in the search form, or buyer may be allowed to perform a general search of databases 32 and/or repository 34 for certain terms. For example, search interface 45 may provide buyer 20 with a search form tailored for class 60 b that includes fields where buyer 20 can specify a desired ink color, tip thickness, or any other appropriate product-related or seller-related criteria. In one embodiment, the fields of the search form correspond to some or all of the product attributes within the product ontology and/or seller attributes within the seller ontology corresponding to the product class that has been selected, and buyer 20 may enter values for the product attributes and seller attributes in the corresponding search form fields. In lieu of a search form, search interface 45 may instead provide a single field where buyer can enter in desired search terms, such as “red” and “fine” (multiple search terms may be entered using Boolean operators or any other appropriate technique).

Search interface 45, or any other appropriate component of GCD server 40, may also facilitate search requests by accessing a buyer profile for buyer 20 containing information compiled from previous search requests made by buyer 20, previous e-commerce transactions involving buyer 20, or other events or actions on the part of buyer 20. For example, a buyer profile may contain a list of sellers 30 matching seller attribute values that buyer 20 may want. Such a list may be compiled from the results of previous searches by buyer 20. Search interface 45 may access the profile for buyer 20 for any suitable purpose. In one embodiment, search interface 45 may access the profile for buyer 20 to automatically generate search criteria, such as product attribute values and/or seller attribute values, for a search. Search interface 45 may also access the profile for buyer 20 to limit its search for products matching product attribute values provided by buyer 20 (or generated automatically) to databases 32 associated with sellers 30 known to match seller attribute values that buyer 20 may want (and/or data in repository 34 associated with such sellers 30).

Based on search criteria provided by buyer 20 or generated automatically, search interface 45 may communicate a query to the appropriate seller database(s) 32 and/or repository 34 requesting that databases 32 and/or repository 34 each return a listing of all products (including associated product data and/or seller data) that meet the search criteria. Databases 32 and/or repository 34 may also return data relating to attribute values that were not included in the search criteria. For example, databases 32 may return a price and availability for products that meet the search criteria even if price and availability were not search criteria. Responses to the queries of databases 32 and/or repository 34 (which may be referred to as “search results”) may be displayed to buyer 20 in any appropriate manner. In one embodiment, search results are communicated directly to buyer 20 from databases 32 and/or repository 34. In another embodiment, GCD 42 lists search results in order of relevance to the search criteria according to suitable matching criteria and presents the results to buyer 20. GCD 42 may also sort the search results according to one or more “default” sort criteria, a sort request made by buyer 20, or one or more buyer preferences recorded in a buyer profile associated with buyer 20. For example, buyer 20 may request that the matching products be listed in order from least expensive to most expensive.

GCD 42 may also sort search results according to content type. For example, GCD 42 may sort search results such that products for which data was received from repository 34 may be presented to buyer 20 first, products for which data was received from seller databases 32 containing content known to match the schema and ontologies of GCD 42 may be presented second, and products for which data was received from seller databases 32 containing content not known to match the schema and ontologies of GCD 42 may be presented third. Within each of these data groups, products may be listed in any suitable order, such as in order of price or any other suitable attribute. For example, search results may be displayed such that products for which data was received from repository 34 may be presented first in order of price, products for which data was received from seller databases 32 containing content known to match the schema and ontologies of GCD 42 may be presented second in order of price, and products for which data was received from seller databases 32 containing content not know to match the schema and ontologies of GCD 42 may presented third in order of price. Although particular examples of displaying search results have been described, search results may be displayed in any suitable order and may be sorted according to any suitable criteria.

Buyer 20 may select a product from the product listing to enter the transactional phase of the e-commerce transaction involving the buyer. During the transactional phase, as described above, the buyer 20 and seller 30 may negotiate a contract for the sale of the product (which may involve, for example, more clearly defining the subject of the transaction, negotiating a price, and reaching an agreement on supply logistics) and generate a legal document embodying the terms of the negotiated contract.

On selection of a product by buyer 20, GCD 42 may communicate a repository identifier (RID) identifying the selected seller 30 and a globally unique identifier (GUID) for the product to buyer 20. For example, an RID may be the network address (such as an IP address) of a seller network node 30 or may be associated with the network address in a table (in which case GCD 42 may use the RID to look up the associated network address and then communicate the network address to buyer 20). Buyer may access the seller 30 using the RID (or network address) and request a transaction regarding the product using the GUID. GCD 42 may even provide a link including a URL of a web site associated with the seller 30 or may provide another appropriate method for buyer 20 to be connected to seller 20. Although only a single example arrow (between buyer 20 n and seller 30 n) is shown to illustrate communication between buyers 20 and sellers 30, it should be understood that any buyer 20 may communicate with any seller 30 to conduct appropriate transactions.

At the close of the transaction phase of an e-commerce transaction, as discussed above, buyer 20 may receive from seller 30 or otherwise a list or other suitable record of the product and/or seller attribute values (collectively referred to as “attribute values”) for the one or more products that are the subject of the transaction. Certification authority 14 may, for a fee or otherwise, keep a record of these attribute values (and possibly other suitable information regarding the transaction) such that buyer 20, seller 30, and others interested in the transaction between the buyer and seller may access the recorded information to verify one or more of the original terms of the contract. In this way, buyer 20, seller 30, and others may determine whether changes have been made to an electronic or other copy of the original contract.

Certification authority 14, which may include an interface 80 providing access to certification authority 14 and one or more databases 82 containing transaction information, may receive from buyer 20 or otherwise a list or other suitable record of attribute values for the one or more products that are the subject of the transaction between buyer 20 and seller 30, obtain from seller 30 verification of the list of attribute values, and store the list of attribute values (and possibly other information regarding the transaction between buyer 20 and seller 30) in databases 82. Certification authority may alternatively receive the list from seller 30 and obtain verification thereof from buyer 20.

Certification authority 14 may generate a “key” giving the holder read-only access privileges to the list of attribute values stored by certification authority 14. The key may be a set of numbers identifying, possibly uniquely, the list and/or the transaction. In addition or as an alternative, the key may identify the location of the list within database 82. In this way, certification authority 14 may use the key to retrieve the stored list when an access request is made. The key may also be a set of numbers, generated according to a suitable algorithm, that may be converted directly into the set of attribute values. Certification authority 14 may communicate copies of the generated key to buyer 20 and seller 30, and buyer 20 and seller 30 may later present the key to certification authority 14 for access to the stored list of attribute values for the transaction between buyer 20 and seller 30. Additionally, buyer 20 and seller 30 may give copies of the key to others having an interest in the list of attribute values, such as, for example, a common carrier, financial institution, legal services provider, or other transaction services provider involved directly or indirectly in the transaction between buyer 20 and seller 30.

Certification authority 14 may provide access to the stored list of attribute values for the transaction between buyer 20 and seller 30 for any suitable purpose. For example, as described above, certification authority 14 may provide buyer 20 and seller 30 access to the list of attribute values for the purpose of verifying the same for the one or more products that are the subject of the transaction between buyer 20 and seller 30. Certification authority 14 may also, as described above, provide others having some interest in the transaction access to the list. For example, a common carrier responsible for transporting the products from seller 30 to buyer 20 may be given access to the list to check certain information relevant to the transportation of the products by the carrier. Similarly, a financial institution loaning money to buyer 20 may be given access to information germane to the loan.

Certification authority 14 may provide access to the entire list of attribute values or to certain portions of the list, depending on the identity of the holder of the key. For example, buyer 20 and seller 30 may be given access to the entire list of attribute values, while a common carrier making an access request may be given access only to those portions of the list relevant to the transportation of the products by the carrier, such as, for example, those providing a physical description of the products the carrier is responsible for transporting from seller 30 to buyer 20. Access to the list of attribute values may be restricted using any suitable technique or combination of techniques. For example, portions of the list which only buyer 20 and seller 30 may need to view may be encrypted such that others may not readily view such information.

FIG. 5 illustrates an example method for providing third party certification of content in an e-commerce transaction. The method begins at step 100, where, during or at the close of the transactional phase of an e-commerce transaction between buyer 20 and seller 30, one of the parties to the transaction, such as, for example, buyer 20, receives from the other party to the transaction, such as, for example, seller 30, a list or other suitable record of the attribute values for the one or more products that are the subject of the transaction. At step 102, the buyer 20 (the party that received the list of attribute values from the other party in this example) communicates the list of attribute values to certification authority 14. Certification authority 14 communicates the list of attribute values, at step 104, to seller 30 (the party that communicated the list of attribute values to the other party in this example) for verification of the list. At step 106, seller 30 either verifies the list of attribute values from buyer 20 or withholds such verification and communicates that information to certification authority 14. If verification is given by seller 30, certification authority 14 stores the list of attribute values within one or more databases 82 and generates a key for the stored information at step 108. At step 110, certification authority communicates copies of the key to buyer 20 and seller 30 (and third parties, if appropriate), and the method ends. If verification is not given by seller 30 at step 106, certification authority notifies buyer 20 that verification was not given at step 112, and the method ends.

FIG. 6 illustrates another example method for providing third party certification of content in an e-commerce transaction. The method begins at step 120, where, at the close of the transactional phase of an e-commerce transaction between buyer 20 and seller 30, one of the parties to the transaction, such as, for example, buyer 20, receives from the other party to the transaction, such as, for example, seller 30, a list of the attribute values for the one or more products that are the subject of the transaction. At step 122, buyer 20 (the party that received the list of attribute values from the other party in this example) communicates the list of attribute values to certification authority 14. Certification authority 14 stores the list of attribute values and generates a key for the stored information at step 124. At step 126, certification authority 126 communicates a copy of the key to buyer 20. Buyer 20, at step 128, communicates a copy of the key to seller 30 (the party that communicated the list of attribute values to the other party in this example). At step 130, seller 30 communicates to certification authority 14 the received copy of the key, along with a list of the attribute values for the transaction according to the records of seller 30. At step 132, certification authority 14 compares the list of attribute values from buyer 20 with the list of attribute values from seller 30. If the lists match at step 134, certification authority 14, at step 136, notifies buyer 20 and seller 30 that the key has been verified, and the method ends. If the lists do not match at step 134, certification authority 14, at step 138, notifies buyer 20 and seller 30 that the lists do not match and the key could not be verified, and the method ends.

Although the present invention has been described with several embodiments, divers changes, substitutions, variations, alterations, and modifications may be suggested to one skilled in the art, and it is intended that the invention may encompass all such changes, substitutions, variations, alterations, and modifications falling within the spirit and scope of the appended claims. 

1. A computer-implemented system for providing third-party certification of content in an electronic commerce transaction, the system comprising one or more servers collectively operable to: receive a first set of attribute values from a first party, the first set of attribute values being associated with one or more products that are the subject of an electronic commerce transaction between the first party and a second party; verify that the first set of attribute values matches, at least in part, a second set of attribute values maintained by the second party, the second set of attribute values being associated with the one or more products that are the subject of the electronic commerce transaction between the first party and the second party; store the first set of attribute values; generate a key identifying the stored set of attribute values, the key providing a holder of the key read-only access to at least certain portions of the stored set of attribute values; communicate a copy of the key to the first and second parties; and in response to presentation of the key, provide read-only access to at least certain portions of the stored set of attribute values.
 2. The system of claim 1, wherein the server is operable to verify that the first set of attribute values matches, at least in part, the second set of attribute values by: communicating the first set of attribute values to the second party; and receiving verification from the second party that the first set of attribute values matches, at least in part, the second set of attribute values.
 3. The system of claim 1, wherein the server is operable to verify that the first set of attribute values matches, at least in part, the second set of attribute values by: communicating a copy of the key to the first party; receiving a copy of the key and the second set of attribute values from the second party, the second party communicating a copy of the key and the second set of attribute values to the certification authority in response to receiving the copy of the key from the first party; and comparing the first set of attribute values with the second set of attribute values.
 4. The system of claim 1, wherein the attribute values comprise product attribute values, seller attribute values, or product and seller attribute values.
 5. The system of claim 1, wherein the first party is a buyer, the second party is a seller, and the electronic commerce transaction involves the sale of the one or more products by the seller to the buyer.
 6. The system of claim 1, wherein the key identifies the location of the stored first set of attribute values within the one or more databases.
 7. The system of claim 1, wherein the server is operable to, in response to presentation of the key, provide read-only access to at least certain portions of the stored set of attribute values to the first party, the second party, or a transaction services provider directly or indirectly involved in the electronic commerce transaction between the first and second parties.
 8. The system of claim 7, wherein the transaction services provider is a common carrier, a financial institution, or a legal services provider.
 9. The system of claim 1, wherein the server is further operable to restrict access to certain portions of the stored set of attribute values based on the identity of the party making a request for access to the stored set of attribute values.
 10. The system of claim 9, wherein the server is operable to encrypt certain portions of the stored set of attribute values to restrict access to those portions of the stored set of attribute values.
 11. The system of claim 1, further comprising: a directory structure comprising a plurality of hierarchically organized product classes, each product class categorizing a plurality of products and defining one or more attributes of the products categorized in the product class, at least one of the product classes categorizing the one or more products that are the subject of the electronic commerce transaction between the first and second parties; one or more pointers associated with one or more of the product classes, each pointer identifying a seller database in which product data enabling a product transaction is stored for products categorized in the product class; and a search interface operable to: communicate, in response to selection of a product class, a search query for product data to one or more seller databases identified by the one or more pointers associated with the selected product class; and receive a plurality of search results from the one or more seller databases in response to the search query, the search results comprising product data for one or more products available from the second party.
 12. A method for providing third-party certification of content in an electronic commerce transaction, comprising: receiving a first set of attribute values from a first party, the first set of attribute values being associated with one or more products that are the subject of an electronic commerce transaction between the first party and a second party; verifying that the first set of attribute values matches, at least in part, a second set of attribute values maintained by the second party, the second set of attribute values being associated with the one or more products that are the subject of the electronic commerce transaction between the first party and the second party; storing the first set of attribute values; generating a key identifying the stored set of attribute values, the key providing a holder of the key read-only access to at least certain portions of the stored set of attribute values; communicating a copy of the key to the first and second parties; and in response to presentation of the key, providing read-only access to at least certain portions of the stored set of attribute values.
 13. The method of claim 12, wherein verifying that the first set of attribute values matches, at least in part, the second set of attribute values comprises: communicating the first set of attribute values to the second party; and receiving verification from the second party that the first set of attribute values matches, at least in part, the second set of attribute values.
 14. The method of claim 12, wherein verifying that the first set of attribute values matches, at least in part, the second set of attribute values comprises: communicating a copy of the key to the first party; receiving a copy of the key and the second set of attribute values from the second party, the second party communicating a copy of the key and the second set of attribute values to the certification authority in response to receiving the copy of the key from the first party; and comparing the first set of attribute values with the second set of attribute values.
 15. The method of claim 12, wherein the attribute values comprise product attribute values, seller attribute values, or product and seller attribute values.
 16. The method of claim 12, wherein the first party is a buyer, the second party is a seller, and the electronic commerce transaction involves the sale of the one or more products by the seller to the buyer.
 17. The method of claim 12, wherein the key identifies the location of the stored first set of attribute values within the one or more databases.
 18. The method of claim 12, wherein providing read-only access to at least certain portions of the stored set of attribute values comprises providing read-only access to at least certain portions of the stored set of attribute values to the first party, the second party, or a transaction services provider directly or indirectly involved in the electronic commerce transaction between the first and second parties.
 19. The method of claim 18, wherein the transaction services provider is a common carrier, a financial institution, or a legal services provider.
 20. The method of claim 12, further comprising restricting access to certain portions of the stored set of attribute values based on the identity of the party making a request for access to the stored set of attribute values.
 21. The method of claim 20, wherein access to certain portions of the stored set of attribute values is restricted by encrypting certain portions of the stored set of attribute values to restrict access to those portions of the stored set of attribute values.
 22. The method of claim 12, further comprising: making available to the first party a directory structure comprising a plurality of hierarchically organized product classes, each product class categorizing a plurality of products and defining one or more attributes of the products categorized in the product class, at least one of the product classes categorizing the one or more products that are the subject of the electronic commerce transaction between the first and second parties, there being one or more pointers associated with one or more of the product classes, each pointer identifying a seller database in which product data enabling a product transaction is stored for products categorized in the product class; communicating, in response to selection of a product class, a search query for product data to one or more seller databases identified by the one or more pointers associated with the selected product class; and receiving a plurality of search results from the one or more seller databases in response to the search query, the search results comprising product data for one or more products available from the second party.
 23. Software for providing third-party certification of content in an electronic commerce transaction, the software embodied in a computer-readable medium and when executed operable to: receive a first set of attribute values from a first party, the first set of attribute values being associated with one or more products that are the subject of an electronic commerce transaction between the first party and a second party; verify that the first set of attribute values matches, at least in part, a second set of attribute values maintained by the second party, the second set of attribute values being associated with the one or more products that are the subject of the electronic commerce transaction between the first party and the second party; store the first set of attribute values; generate a key identifying the stored set of attribute values, the key providing a holder of the key read-only access to at least certain portions of the stored set of attribute values; communicate a copy of the key to the first and second parties; and in response to presentation of the key, provide read-only access to at least certain portions of the stored set of attribute values.
 24. The software of claim 23, operable to verify that the first set of attribute values matches, at least in part, the second set of attribute values by: communicating the first set of attribute values to the second party; and receiving verification from the second party that the first set of attribute values matches, at least in part, the second set of attribute values.
 25. The software of claim 23, operable to verify that the first set of attribute values matches, at least in part, the second set of attribute values by: communicating a copy of the key to the first party; receiving a copy of the key and the second set of attribute values from the second party, the second party communicating a copy of the key and the second set of attribute values to the certification authority in response to receiving the copy of the key from the first party; and comparing the first set of attribute values with the second set of attribute values.
 26. The software of claim 23, wherein the attribute values comprise product attribute values, seller attribute values, or product and seller attribute values.
 27. The software of claim 23, wherein the first party is a buyer, the second party is a seller, and the electronic commerce transaction involves the sale of the one or more products by the seller to the buyer.
 28. The software of claim 23, wherein the key identifies the location of the stored first set of attribute values within the one or more databases.
 29. The software of claim 23, operable to, in response to presentation of the key, provide read-only access to at least certain portions of the stored set of attribute values to the first party, the second party, or a transaction services provider directly or indirectly involved in the electronic commerce transaction between the first and second parties.
 30. The software of claim 29, wherein the transaction services provider is a common carrier, a financial institution, or a legal services provider.
 31. The software of claim 23, further operable to restrict access to certain portions of the stored set of attribute values based on the identity of the party making a request for access to the stored set of attribute values.
 32. The software of claim 31, operable to encrypt certain portions of the stored set of attribute values to restrict access to those portions of the stored set of attribute values.
 33. The software of claim 23, further operable to: make accessible to the first party a directory structure comprising a plurality of hierarchically organized product classes, each product class categorizing a plurality of products and defining one or more attributes of the products categorized in the product class, at least one of the product classes categorizing the one or more products that are the subject of the electronic commerce transaction between the first and second parties, there being one or more pointers associated with one or more of the product classes, each pointer identifying a seller database in which product data enabling a product transaction is stored for products categorized in the product class; communicate, in response to selection of a product class, a search query for product data to one or more seller databases identified by the one or more pointers associated with the selected product class; and receive a plurality of search results from the one or more seller databases in response to the search query, the search results comprising product data for one or more products available from the second party.
 34. A system for providing third-party certification of content in an electronic commerce transaction, comprising: means for receiving a first set of attribute values from a first party, the first set of attribute values being associated with one or more products that are the subject of an electronic commerce transaction between the first party and a second party; means for verifying that the first set of attribute values matches, at least in part, a second set of attribute values maintained by the second party, the second set of attribute values being associated with the one or more products that are the subject of the electronic commerce transaction between the first party and the second party; means for storing the first set of attribute values; means for generating a key identifying the stored set of attribute values, the key providing a holder of the key read-only access to at least certain portions of the stored set of attribute values; means for communicating a copy of the key to the first and second parties; and means for providing, in response to presentation of the key, read-only access to at least certain portions of the stored set of attribute values.
 35. A computer-implemented system for providing third-party certification of content in an electronic commerce transaction, comprising one or more servers collectively operable to: make accessible to a first party a directory structure comprising a plurality of hierarchically organized product classes, each product class categorizing a plurality of products and defining one or more attributes of the products categorized in the product class, there being one or more pointers associated with one or more of the product classes, each pointer identifying a seller database in which product data enabling a product transaction is stored for products categorized in the product class; communicate, in response to selection of a product class, a search query for product data to one or more seller databases identified by the one or more pointers associated with the selected product class; receive a plurality of search results from the one or more seller databases in response to the search query, the search results comprising product data for one or more products available from a second party; receive a first set of attribute values from the first party, the first set of attribute values being associated with one or more products that are the subject of an electronic commerce transaction between the first party and a second party; verify that the first set of attribute values matches, at least in part, a second set of attribute values maintained by the second party, the second set of attribute values being associated with the one or more products that are the subject of the electronic commerce transaction between the first party and the second party; store the first set of attribute values; generate a key identifying the stored set of attribute values, the key providing a holder of the key read-only access to at least certain portions of the stored set of attribute values; communicate a copy of the key to the first and second parties; and in response to presentation of the key, provide read-only access to at least certain portions of the stored set of attribute values. 